E. COLI INACTIVATION EFFICIENCY OF ZERO-VALENT IRON NANOPARTICLES STABILIZED BY CARBOXYMETHYL CELLULOSE

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ZAREI R.; MOSAFERI M.; SOROUSH BARHAGI M.H.; KHATAEE A.R.; ASGHARI JAFARABADI M.

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Journal: Journal of Health Year:2014 | Volume:5 | Issue:3 Page(s): 214-223

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Title

E. COLI INACTIVATION EFFICIENCY OF ZERO-VALENT IRON NANOPARTICLES STABILIZED BY CARBOXYMETHYL CELLULOSE

Author(s)

Keywords

IRON NANO PARTICLESQ2

INACTIVATION OF E.COLIQ2

STABILIZATIONQ2

CARBOXY METHYL CELLULOSEQ2

DISINFECTIONQ2

Abstract

Background & Objectives: Zero-valent iron nanoparticles have been widely used as an effective agent in environmental remediation. The present study was designed to determine bactericidal effect of stabilized zero-valent iron nanoparticles on E.coli.Methods: Nano zero-valent iron (NZVI) particles were synthesized and characterized using X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Carboxymethyl cellulose (CMC) was used for stabilizing particles. INACTIVATION OF E.COLI was tested using different wt% (w/w) of CMC and different concentrations of stabilized nanoparticles for a period of 30 min. To compare antibacterial effects of stabilized and non-stablized NZVIPs, 0.1g/l of nanoparticles was mixed with E. coli suspension. For statistical purposes three-way ANOVA and Duncan's tests were used.Result: Increasing nanoparticle concentration and contact time increased E. coli inactivation efficiency. However bactericidal effect was decreased with increasing wt% of NZVI stabilizer. Significant differences were observed between concentrations of 1 and 2 g/l and 0.1 and 0.5 g/l for all levels of bacteria density and CMC except for 0.02 wt%. Efficiency of 100% was obtained at concentrations of 1 and 2 g/l. Significant differences were found between results of stabilized and non-stabilized nanoparticles. After contact time of 120min, inactivation efficiency of 100 and 78% were observed for non-stabilized and stabilized particles, respectively.Conclusions: CMC might prevent direct physical contact of bacteria with nanoparticle’s surface and reduce their interaction and consequently cause a reduction in toxicity of nanoparticles against bacteria.

Cites

THE SURVEY OF THE NANO POLYAMIDOAMINE-G5 (NPAMAM-G5) DENDRIMER ANTIBACTERIAL PROPERTIES ON BACILLUS SUBTILIS, SALMONELLA TYPHI, SHIGELLA DYSENTERIAE AND ESCHERICHIA COLI FROM AQUEOUS SOLUTION

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APA: Copy

ZAREI, R., MOSAFERI, M., SOROUSH BARHAGI, M.H., KHATAEE, A.R., & ASGHARI JAFARABADI, M.. (2014). E. COLI INACTIVATION EFFICIENCY OF ZERO-VALENT IRON NANOPARTICLES STABILIZED BY CARBOXYMETHYL CELLULOSE. JOURNAL OF HEALTH AND HYGIENE, 5(3), 214-223. SID. https://sid.ir/paper/226897/en

Vancouver: Copy

ZAREI R., MOSAFERI M., SOROUSH BARHAGI M.H., KHATAEE A.R., ASGHARI JAFARABADI M.. E. COLI INACTIVATION EFFICIENCY OF ZERO-VALENT IRON NANOPARTICLES STABILIZED BY CARBOXYMETHYL CELLULOSE. JOURNAL OF HEALTH AND HYGIENE[Internet]. 2014;5(3):214-223. Available from: https://sid.ir/paper/226897/en

IEEE: Copy

R. ZAREI, M. MOSAFERI, M.H. SOROUSH BARHAGI, A.R. KHATAEE, and M. ASGHARI JAFARABADI, “E. COLI INACTIVATION EFFICIENCY OF ZERO-VALENT IRON NANOPARTICLES STABILIZED BY CARBOXYMETHYL CELLULOSE,” JOURNAL OF HEALTH AND HYGIENE, vol. 5, no. 3, pp. 214–223, 2014, [Online]. Available: https://sid.ir/paper/226897/en

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